Steam-boiler setting



5 Sheets-Sheet 1.

'Patented Jan. 15, 1889.

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@.H. SELLERS.

STEAM BOILEB. SETTING.

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G. H. SELLERS, STEAMBOILER SETTING.

Patented Jan. 15 1889 n .N .mi v

INVENTOR.

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5- Sheets-Sheet 3.

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G. H. SELLERS. STEAM BOILER SETTING.

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(No Model.) 5 Sheets-,Sheet 4. CT. H. SELLE-RS.

STEAM BOILBR SETTING. No. 396,373. Patented Jan. 15, 1889.

(No Model.) 5 sheetssheen 5.

G. H. SELLERS.

STEAM BUTLER SETTING.

Patented Jan'. l5, 1889.j

U'Nirnn STATES GEORGE H. SELLERS, OF RIDLEY PARK, PENNSYLVANIA, ASSIGNOR TO THE EDGE MOOR IRON COMPANY, OF EDGE MOOR, DELAWARE.

STEAM-BOILER SETTING.

SPECIFCATION forming part of Letters Patent No. 396,373, dated January 15, 1889. Application filed September 9, 1887. Serial No, 249,277. (No model.)

To all whom, 'ff/1 may concern:

Be it known that l, GEORGE H. SELLERS, a citizen of the United States, residing at Ridley Park, in the county of Delaware, in the State of Pennsylvania, have invented certain Improvements in Setting Steam-Boilers, of which improvements the following is a specification.

These improvements relate to horizontal steam-boilers, and as I have applied them to 1o the Galloway boiler, the drawings represent this form; but .they are equally applicable to any other horizontal boiler that is set in brick-work. The Galloway boiler has heretofore been supported in the setting upon spe* cial-shaped iiie-bricl,wliich formed the apex of the side walls of a horizontal flue beneath the boiler, through which iiue the products of combustion passed direct-ly to the chimney. These products, upon leaving the internal l zo flue at the rear end of the boiler, entered two side fines-one on each side of the boilerthrough which they passed to the front end, where they entered thelower flue, before mentioned; and the space required for these side 2 5 iiues to enter the lower flue was the only part of -the boiler unsupported in the manner described. The boiler is not secured in position otherwise than by the side walls and the supports, before mentioned, so that its expansion 3o and contraction are liable to produce an end movement; and as the covering of the itlues at the rear end prevents any movement in that direction, the movement, when it occurs, must always be toward the front end; and this 3 5 opens a communication into the lower flue, through which products of combustion can pass directly to the chimney without passing along the outside of the boiler-shell, as it is desired that they shall do. To avoid this dis- 4o position to crawl, many, and perhaps most, horizontal boilers are supported upon the side walls of the boiler-setting by brackets riveted upon the shell of the boiler; and many are suspended from cross-beams above the boiler, which beams rest upon the side walls of the setting; but in all cases the brick masonry of the side walls is built against the boiler, and in very many cases these walls are pressed against the boiler by strong clamping-plates 5o united by cross-bolts above and below the boiler. The various arrangements above mentioned are intended to maintain the boiler and the brick masonry of the setting in contact, and

in the position originally designed for them and in which they are iirst built; but, as the boiler must expand and contract from the conditions of its use, it has been found practically impossible to maintain the boiler and its setting in the same relative position.

It is one obj ect of my improvement to rem- 6o edy this defect; another object is to improve the draft and facilitate the removal of ashes which must accumulate in the fines; afurther obj ect is to increase the heating-surface; and to these ends my invention consists in a steam-boiler provided with two supports, one of which shall be Iixed and the other movable, so that the expansion and contraction of thc boiler must take place from and to its fixed support; and provided, further, with a fixed .7o safety-support which will receive and sustain the weight of the boiler in case the movable support shall fail to do so; and provided, further, with a chamber which surrounds the boiler except at the firing end, so that/products 7 5 of combustion shall have access to the entire exterior of the boiler within this chamber.

In order that my invention may be more clearly understood, reference is now made to the drawings forming part of this speciiica- 8o tion, in which- Figure l represents the setting in vertical sect-ion and a side view of the boiler in position therein. Fig. 2 is a horizontal cross-section of the brick-work with a plan view of the boiler in place. Fig. 3 is avertical cross- A section of the boiler and setting upon the line a b, Fig. l. Fig. el is a frontv elevation of theA rocker-snpport with the saddle in which the boiler rests. Fig. 5 is a vertical cross-section 9o of the rocker-support and its saddle. Fig. 6 is a plan of this saddle, and Fig. 7 is a side view of the same. Fig. 8 represents the setting as arranged when the rocker-support is placed at the front end, outside of the closed chamber, and Fig. 9 is a plan of the same. Fig. 10 is a front elevation of the Yrocker-support for this arrangement. Fig. ll is a plan of the saddle, and Fig. l2 is a plan of the rocker-frame. Ioo

In all of the drawings similar letters refer to similar parts. l

The vertical section shown in Fig. l repre sents the boiler A in position, supported at the front end by the cross-wall B oi' the brick setting. This support is also shown in Fig. 2. This cross-wall is built against the boiler and embraces its whole circumference. The side walls are shown in Figs. 2 and They are composed of hard red brick lined inside with fire-brick, a small air-space being lett between the red brick and the fire-brick. These side walls are surmounted by a brick arch of the same materials as the side walls, and are built with an ai r-space, as in the side walls. In the top of this arch openings are made, as shown in Fig. l, through which the nozzles which connect with the safety valves, the main steam-pipe, and the man-hole can pass freely. The space between these nozzles and the brickwork may be lled with any kind of packing that wilt withstand the heat and obstruct the passage of' air, such as mineral wool, asbestus ber, or curled hair. It lett open, the air will rush in to some extent and cool the surfaces exposed to it. The rear end ol? the brick settin gis contracted, as shown in Figs. l. and 2, and the arch covering of this contracted part is shown by dotted lines in Fig. 3. The object to be attained by this contraction is to prevent the products ot' combustion, after they. pass outI from the rear end ot' theboiler, from iiowing directlyover the topof the boiler. vThis flow is further prevented by the angle-iron C, which is curved to t under lthe arch covering ot' this contracted part of the brick-work without touching it, and is suspended from the top of the boiler-shell by the straps c c, which are bent to hook over the top of the boiler-shell, but which are not fastened to it.

In the center of the rear wall (see Figs. l, 2, and 3) I place` a cleaning-door, D, through which the ashes that will accumulate in the boiler-flue and under the boiler can be readily removed. The lightest of these ashes will settlel upon the top of the angle-iron C, between it and the brick arch above it, and thus present an almost perfect barrier to the direct flow of the products of combustion over the top of the boiler without interfering with its treedom to expand and contract with the changes ot temperature to which it must be subjected. As thus arranged, it will be observed that the boiler is placed within a closed chamber the walls ot' which do not touch the boiler except at one end,where they completely inclose and support that end in a fixed position, providing that the other end shall be so supported as to yield readily in a longitudinal direction. To this end I provide the rocker-support E, (see Figs. 4, 5, 6, 7, l0, il, and 12,) which consists ot' the hollow rocker-frame E, its base-plate F, and the saddle G. This saddle composed of two pieces which do not touch each other, but which are held in their proper relative position by the loop-strap d d. (See Figs. 4, 5, l5, l0, and Il.) The upper side of this saddle is curved to fit the boiler, while the under side is straight, with a recess in the bottom to re- Ceive the upper end of the rockerframe E.

The curved and straight portions of the saddle are united by strong ribs or webs, as shown, and the upper end of the rocker-frame is so constructed as to embrace one rib on each halt' of the saddle to supplement the loop-strap d (l and prevent the two halves ot the saddle from separating in case the loo p strap d (l should break. The upper and lower ends of the rocker-frame F. are made alike; consequently the base-plate F must be made so that the rocker-frame will embrace it as it does the two halves ofthe saddle, so that when this base-plate, which rests upon a suitable foundation, is secured in place the boiler will be iirmly secured transversely, while it will be perfectly free to move longitudinally, so far as this support is concerned. The rockertrame maybe made hollow, and provided with thc circular openings c c, for the purpose ot' introducing a current of cool air through this supportif the exigencics ot' its use should ever require it.

lt perhaps possible that some failure in the brick masonry or some obstruction between the boiler and the rear end of its closed chamber might prevent the rocker-frame from movin g back and forth, and that then a crawling ot' the boiler might take place which might be unobserved until the rocker-frame was so far out of position as to permit the boiler to tall; or the rocker-frame itself, being exposed to long-continued heat, might break, and thus permit the boiler to fall. To guard against any such contingency, I provide a fixed safetysupport, I-I, (see Figs. l, 2, and 3,) which conot' a solid brick pier in the rear of the rocker-support E, the top of this pier conforming to the shape of the boiler, but not touching it, so that in case the rocker-frame should tail the boiler could only settle down upon this safety-support, which it could do without damage to itself or to the brick-work of its setting. The position of this safety-support is such as to guard the rocker-frame from the direct tlow of the products ot combustion as they pass out from the rear end of the boiler. These products, after passing through the chamber on the outside of the boiler-shell, pass out through the flue I into the main 'lue J, and from thence to the chimney. (See Figs. il and 2.) As thus arranged the boiler is pertectly free to expand and contract without producing' any strains between it and the setting tending to the .injuryof either. The products of combustion as they leave the boiler are discharged into a chamber, which must necesn sarilybe very large, and as the passage through it is direct there will be the least possible obstruction to the draft, so that the height of the chimney may be reduced. The area being great the current will be slow, so that the greatest deposit of ashes will occur here, which is the most convenient point for their removal, and the whole exterior of the boiler-shell, except the fronthead, being' exposed to the heat of the outgoing products of combustion, the heatingsurface is increased beyond that of IOO IIO

any other boiler of the character hereinbefore mentioned.

I have described the boiler as fixed at the front or firing end and supported upon a rocker-frame within the closed chamber, where the rocker-frame is exposed to the heat of the products of combustion, which in the Galloway boiler is not important; but the boiler may be fixed at the back end upon a brick pier within the closed chamber, and the rocker-frame may be placed at the front end outside of the closed chamber, the front wall of this chamber having a circular opening form ed in the masonry to permit the boiler to move freely therein without touching it. The space between the boiler and the masonry may be filled with any kind of soft packing that will withstand the heat-#such as mineral wool, bestus fiber, or curled hair-to prevent the indraft of air without interfering with the free movement of the boiler. (See Figs. 8 and 9.) The circular opening through the front end of the closed chamber will then become the iixed safety-support and the saddle G will have less weight to carry than when it is placed inside of the closed chamber, and it may therefore be shortened so as to go into the recess in the masonr 1 provided for the blow-off pipe and valve, as shown in Figs. 9 and l0, while the upper end of the rocker-frame E may be en' larged and provided with a circular opening to admit this blow-off pipe, as shown in Fig. l2.

I am aware that boilers have been set in brick masonry and provided with yielding supports; but in all such cases the masonry has supported the boiler at more than one place, so'that the effect of expansion and contraction cannot be eliminated, and the support has been that of rollers, which will be come clogged with ashes, so that they cannot turn, and, moreover, they afford support only upon a line which cannot be maintained, and no provision has been made in such cases to guard against the effects of failure in the yielding support.

Having now described the objects and nature of i'ny invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A horizontal steam-boiler, except at the ring end, inclosed within a chamber, so that products of combustion shall have access to the entireA exterior of the boiler within the chamber, in combination with a rocker-support and a lined safety-support, substantially as and for the purposes set forth.

2. In combination with asteam-boiler and a suitable support, the saddle G, composed of two pieces united by the loop-strap d d', substantially as described.

3. A steam-boiler and the saddle G, in combination with the rocker-frame E, which supplements the loop-strap d d, substantially as described.

4. In combination with a steam-boiler, the rocker-support E, composed of the rockerframe E, its base-plate F, and the saddle G, arranged and combined substantially as and for the purposes set forth.

' GEO. H. SELLERS.

IVitnesses:

CHAs. E. PANcoAsT, J oHN L. PHILLIPS. 

